Home / 1,911,903.74-2,638,984.32-1,249,711.81

Finding the Fourth Proportional to 1,911,903.74, 2,638,984.32 and 1,249,711.81

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Solution

The fourth proportional to 1,911,903.74, 2,638,984.32 and 1,249,711.81 is: 1,724,966.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,911,903.74 : 2,638,984.32 = 1,249,711.81 : x
  2. Step 2: Convert to fraction form
    1,911,903.74/2,638,984.32 = 1,249,711.81/x
  3. Step 3: Cross multiply
    1,911,903.74x = 2,638,984.32 × 1,249,711.81
  4. Step 4: Simplify right side
    1,911,903.74x = 3,297,969,857,913.90
  5. Step 5: Solve for x
    x = 3,297,969,857,913.90/1,911,903.74
  6. Step 6: Final answer
    x = 1,724,966.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.